Printing press



R. S. TYLER PRINTING PRESS Filed June` 30 1921 Patented Jan. 2.9, 1924.

PATENT OFFICE..

EALPI-I S. TYLER, Oli'v CLEVELAND HEIGHTS, OI -II O, ASSIGNOR T0 THECHANDLER 8a PRICE COMPANY, OF CL'EV'ELAND, OHIO, A CORPORATION QHIO.

` PRINTLNG PRESS. y

Application filed June 30, 1921. Serial No. 481,454.

tion, are mounted ina reciprocating carriage v or saddle, and pass in the course of their movement, first over an ink-distributing disk and then over the form to which the ink requires to be transferred prior to printing therefrom. Such form is set in a bed, and o the rolls are held so as to contact with such form under proper pressure by` means of an inteeral track or rail on either side of the form with which the exposed metal ends of the rolls, or specially provided rollers, coaxial therewith, engage.

Under conditionsof use the body of such inking roll has a tendency to change its diameter with the result that after a time the rollers no longer contact with the forms under the proper pressure so as to apply the ink in a the right amount, and evenly thereover. The i object of the'present invention`,,accordingly, is to provide an adjustable track wherewith the rolls may thus engage in passing over the form, the adjustment being of such a character that the contacting pressure of the rolls with the form may be accurately gaged.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims, the annexed drawing and the following description setting forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be employed.

In said annexed drawing 1- Fig. l is a broken side elevation of a'Gordon or platen printing press showing my improved construction of adjustable track incorporated therein; Fig. 2 is a similar side elevation but on a larger scale of such track and the adjusting means therefor; Fig. 3 is a front elevation of the same; and Figs. 4: and 5 are transverse Sections of details taken on the planes indicated by the lines tand 5-5, respectively, Fig. 2.

The only parts of the printing i press mechanism proper shown in the drawings are the bed 1, which is the part that holds the form, and the disk 2, over which the inking device passes in its travel from the fountain (not' shown) to such form. Such device comprises essentially aseries of composition rolls 3, 4 and 5 of familiar construction,

which are supported at their respective ends by arms 6 and 7 movablymounted in an oscillatoryframe 8, springs (notshown) vbeing provided in connection with said arms to retain such rolls in more or`less close contact with the surface across which they pass. LThe forward roll has the ends of its spindle directly journaled in arms 7, while the two following rolls 3 and ll have the ends of their spindles journaled in the saddle 11 that is pivotally attached to the outer ends of the corresponding arms 6.

In moving from their uppermost position shown in dotted Outline in Fig. 1, wardly across lthe disk 2, the rolls in question directly contact with said disk under the pressure of the springs in the frames 8, there being of course one such frame on each side of the bed 1. However, in passing across the,`

form mounted on the front face of the bed, it is desirable, as previously explained, that the degree of pressure, under which the rolls contact with the printing elements composing the form should be accurately gaged, and to this endI provide in my present improved construction of press, separate steel tracks 12, one on each side of the bed, wherewith the appropriate parts of the rolls are adapted to contact, it being understood that these tracks project slightly beyond the face of the form when mounted in the bed. The upper ends 13 of the tracks are curved or beveled so as to lie approximately on a line with the disk 2 and thus permit the rolls to pass radially from the track on to such disk, and vice versa..

For the purpose of securing the tracks 12 to the bed 1 I preferably employ the means shown in detail in Figs. 2 to 5, inclusive. Two eye-bolts li and 15 are attached to the bed 1, such first eye-bolt rising vertically from the top face of the bed, while the second projects laterally from the side thereof.

downtively, each such fiheadless bolt being threaded throughout its length, and nuts 18 being threaded thereon, one on the inside and the other on the outside of the corresponding eye-bolt. By the foregoing means it will, be seen that the track 12 may be independently adjusted inwardly or outwardly at its respective ends by properly turning the nuts 18 on the respective headless bolts 16 and 17. a v

' For ,the purpose of relievingv the adjusting device just-described Vof unnecessary strain, and in order to firmly secure the track 12 to the bed two set bolts 20 lare provided, passing through slots 21-in said track, of such length transversely of the latter as to permit of the requisite adjustment, these bolts 20 of course being loosened before the 'nuts 18 are turned to adjust the position of the track. An indicator is also provided whereby the amount of adjustment of each end of the track may be gaged, said indicator comprising a pointer 22 fixedly attached to the track,and a series of graduations 23 on the side of the bed adj acent such pointeryas best shown in Fig. 2. w

The adjustable trackj ust described, it will be seen, is of simple construction and may be eas'ily attached to presses of the type in'hand as at present extensively used. lThe means' -provided for adjusting the track are easily operated with an ordinary wrench requiring no special tools, and bylmeans of the two independent indicators, not only may the p amount of adjustment be accurately determined, but the track can be definitely set with respect to a predetermined normal position. o

i' Other modes of applying the principle of my invention may be employed instead of' the one explained, change being made as regards the mechanism herein disclosed, provided the means statedby any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention 1. In a printing press, the combination with the bed, ink-distributing disk, and composition rolls adapted to pass over said bed and disk, of Separate tracks, one on each side of said bed adapted to support said rolls in thus passing thereover; and adjustable means 'for securing. said tracks to said bed, said means for each track includin' two eye-bolts one adjustably secured to sai bed so as to project upwardly therefrom adjacent the upperend of its adjacent'track and the other adjustably secured to said bed iso .as to project laterallytherefrom adjacent with the bed, ink-distributing disk, and composition rolls adapted to pass over said bed and disk, of separate tracks, one on each side of said bed adapted to support said rolls in thus passing thereover; andcadjustable means for securing said tracks to said bed said means including adjustable members projecting upwardly and laterally respectively from said bed adjacent the respective ends of each of said tracks, threaded members on the corresponding tracks cooperative with. said adjustable members; an indicating device adjacent the `:respective ends of each track, wher'eby its adjustment may be gaged, saidl device including a pointer fiXedly attached to said track and graduations on said bed Vadjace'nt said .pointer, and track s'ecuring means located toward the respective Vends of 'said tracks outwardly of said adjusting means.

Signed by me this 24 day of June, 1921.

RALPH S. TYLER. 

